From 74d59882f6b87f2f8e4027ece148d5c01a30f090 Mon Sep 17 00:00:00 2001
From: Antonio Maiorano <amaiorano@google.com>
Date: Tue, 13 Jun 2023 11:17:13 -0400
Subject: [PATCH] Add missing headers for clang with libc++ builds

I needed to add these headers to successfully build DXC with clang and
libc++.
---
 lib/DxilDia/DxcPixBase.h    | 1 +
 lib/Support/raw_ostream.cpp | 1 +
 2 files changed, 2 insertions(+)

diff --git a/lib/DxilDia/DxcPixBase.h b/lib/DxilDia/DxcPixBase.h
index 9fe45f37cd..913b2faf96 100644
--- a/lib/DxilDia/DxcPixBase.h
+++ b/lib/DxilDia/DxcPixBase.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include "dxc/Support/WinIncludes.h"
+#include <stdexcept>
 
 namespace dxil_debug_info
 {
diff --git a/lib/Support/raw_ostream.cpp b/lib/Support/raw_ostream.cpp
index 39bd496ed0..efa35fc0d3 100644
--- a/lib/Support/raw_ostream.cpp
+++ b/lib/Support/raw_ostream.cpp
@@ -28,6 +28,7 @@
 #include <ios>
 #include <sys/stat.h>
 #include <system_error>
+#include <float.h> // HLSL Change: add for '_fpclass'
 
 // <fcntl.h> may provide O_BINARY.
 #if defined(HAVE_FCNTL_H)